private void addPlane_Click(object sender, EventArgs e)
{
addConveyance addConveyanceObj = new addConveyance("Plane");
addConveyanceObj.ShowDialog();
}
private void addBusBtn_Click(object sender, EventArgs e)
{
addConveyance addConveyanceObj = new addConveyance("Bus");
addConveyanceObj.ShowDialog();
}
